API Project: Request Header Parser Microservice

User Story:

1. I can get the IP address, preferred languages (from header Accept-Language)
and system infos (from header User-Agent) for my device.

Example Usage:

https://splendid-leather.glitch.me/api/whoami

Example Output:

{"ipaddress":"::ffff:159.20.14.100","language":"en-US,en;q=0.5",
"software":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0"}